Plastic thermal barrier for use in constructing thermally insulated windows doors, and/or frames and the like



FIG. 1 is a perspective view of a plastic thermal barrier for use in constructing thermally insulated windows, doors, frames and the like, shown fragmentarily to indicate indeterminate length;

FIG. 2 is a sectional view thereof taken along line 2--2 of FIG. 1;

FIG. 3 is a top plan view thereof, the other side being a mirror image thereof. 

The ornamental design for a plastic thermal barrier for use in constructing thermally insulated windows, doors, and/or frames and the like, substantially as shown and described. 